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Klio2033 [76]
4 years ago
7

How do I find the atom number

Physics
1 answer:
alex41 [277]4 years ago
4 0

The atom number of an atom is the number of protons contained within its nucleus.

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Is balancing a egg on the eclipse science or pseudoscience
andrey2020 [161]
Balancing a egg would be eclipse science
7 0
3 years ago
When did robert fulton invent the steamboat
bekas [8.4K]

Answer:

1807

Explanation:

Robert Fulton (1765–1815) was an American engineer and inventor who is widely known for developing a commercially successful steamboat called Clermont. In 1807, that steamboat took passengers from New York City to Albany and back again, a round trip of 300 miles, in 62 hours.

7 0
3 years ago
The graph shows the US Department of Labor noise regulation for working without ear protection. A machinist is in an environment
andrew-mc [135]

(1) The INCREASE in the sound level from the ambient work environment level (in dB) is 1 dB.

(2) The factor that sound intensity exceed the 1.5- Hours/day intensity limits from the graph is 19.6 %.

<h3> Increase in the sound level </h3>

The INCREASE in the sound level from the ambient work environment level (in dB) is calculated as follows;

Increase in sound level = final sound level - original sound level

Increase in sound level = 86 dB - 85 dB = 1 dB

<h3>Factor of sound level increase</h3>

from the graph at 1.5 hours/day, sound level = 97 dB

Increase in sound intensity = final sound level - original sound level

Increase in sound intensity = 116 dB - 97 dB = 19 dB

Factor increase = 19/97 = 0.196 = 19.6%

Thus, the factor that sound intensity exceed the 1.5- Hours/day intensity limits from the graph is 19.6 %.

Learn more about sound intensity here: brainly.com/question/14261338

#SPJ1

7 0
2 years ago
Type the correct answer in the box. Round your answer to the nearest whole number. The population in the United States in 2000 w
vampirchik [111]

We will use the percentage difference formula and so:

\frac{|Population_{final}-Population_{initial}|}{Population_{initial}}

By plugging in our values we obtain:

\frac{321-281}{281}=0.142349

And 0.142349 converted to percentage is :

0.142349 \times 100 = 14.2349%


Therefore, there was a population increase of 14.2349% from 2000 to 2015 in the US.

3 0
3 years ago
Read 2 more answers
After 20 seconds, a 200-kg object increases its velocity from 15 m/s to 40 m/s. Determine the impulse applied to the object. (Al
sleet_krkn [62]

Answer:

Imp_{1-2}=5000[kg*m/s]

Explanation:

In order to solve this problem, we must use the principle of conservation of momentum, which is defined as the product of mass by Velocity.

It must be defined that the impulse after the force is applied is equal to the momentum before the impulse applied on the body.

ΣPbefore = ΣPafter

P = momentum = m*v [kg*m/s]

In this way, we will construct the following equation.

(m_{1}*v_{1})+ Imp_{1-2}=(m_{1}*v_{2})

where:

m₁ = mass of the object = 200 [kg]

v₁ = velocity of the object before the impulse = 15 [m/s]

v₂ = velocity of the object after the impulse = 40 [m/s]

Now replacing:

(200*15) + Imp_{1-2} = (200*40)\\Imp_{1-2}=5000[kg*m/s]

7 0
3 years ago
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